IGI Diamond Identification Certificate Enquiry Certificate Content Description
I Diamond Report ★ The International Gemmological Institute is the oldest of its kind in Antwerp. Built in 1975, its laboratories are located in New York, Bangkok, Mumbai and Tokyo.
IGI is the world's largest gemstone (bare diamond) grading and evaluation agency and is now the largest and independent gem identification and evaluation agency.
The IGI Diamond Report is primarily a statement of the authenticity of the diamond, which provides a reliable and accurate report on the identity and grade of the diamond in an internationally recognized method. Each diamond is scientifically analyzed by several gemologists who combine their experience with the latest equipment to accurately describe the characteristics of the diamond and the quality of the cut. All details are described in an understandable language so that the different qualities of the diamond can be truly appreciated.
The grade or quality of a diamond is based on four aspects and is usually described as 4C: carat, color, clarity and cut. These four aspects are analyzed and described in the ICI Diamond Report.
Certificate content comparison instructions: ★ ★
The IGI Diamond Report is essentially a statement that uses a world-recognized system to prove the authenticity of a diamond and provide a reliable and correct diamond identity and level.
Diamond certificate number (Number): The certificate number of the diamond
Date: The date the diamond was identified
Description: Demonstrate that the diamond is a natural diamond
Diamond shape and cut style (ShapeCut): mainly describes the shape and cut style of the diamond
Carat weight: Describes the approximate weight of a diamond to one hundredth of a carat weight
Measurements: Diamond size in millimeters
TableWidth: The ratio of diamond (round diamond or fancy drill) countertops relative to diameter
CrownHeight: The ratio of the crown of a diamond (round diamond or fancy drill) relative to the diameter
PavilionDepth: Proportion of diamonds (round or fancy) pavilions relative to diameter
Culet: the appearance of the bottom tip
GirdleThickness: The thickness of the diamond's girdle
Symmetry: The level of symmetry of a diamond
Polish: The polished grade of a diamond
ClarityGrade: Clarity rating of diamonds under a 10x magnifying glass
ColorGrade: The color grading of the diamond
Fluorescence: visible light emitted by diamonds under ultraviolet light
Clarity structure diagram: A display image observed under a magnifying glass that describes the shape of the diamond and the characteristics and location of the inclusions
Comments: A description of other characteristics of diamonds not mentioned in the report.
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